What causes my "kitchen witch" to move? Not a physics person but curious about something going on and hoping someone can explain.
I have a kitchen witch hanging from my kitchen ceiling on some fishing line and it’s constantly swaying and moving about even though there is absolutely no air flow in the room (no windows open, no fans or aircon on) there is a plant right beside it and it’s not moving so there’s no breeze what so ever. 
Just wondering what causes this? I personally don’t believe in ‘supernatural’ stuff so I just want to know what the logical explanation is :) 
Use to be a science-buff in school so really interested! 
 A: If the object hanging off the ceiling is light enough, just convection flow of air can constantly nodge it. I don't know exactly what you mean by "kitchen witch" or how the setup is arranged, but I have a hunch that's what's happening.
A: It is a relatively light object suspended on a string, which is moving. Thus some force must be acting on it. By far the most probable force is the air around it. But as you say, there is no breeze. So most likely it is turbulence in the air flow cause by the movement of people in the room (and maybe small airflows through bad isolation). Why is the plant not moving? Likely because the stems of the plant are harder to move than the pendulum-like object you have made of the kitchen witch.
But since you were a science-buff, what you of course have to do is conduct an experiment to test the supernatural force of your kitchen witch. Try finding an object of similar volume and mass, and suspending it in the same place. If it does not move, then your witch might possess magical properties! In that case, further experiments should be done. But if it does move, it would support a simple physical cause, such as our theory that it's simply an airflow too weak to move the plant (and too weak for you to feel).
